Elastic webbing



March 13, 1928. 1,662,609

J. HIRSCH ELASTIC WEBB ING Filed Feb. 1, 1927 Patented -Mar. 13, 1928.

UNITED STATES v 1,662,609 PATENT orrica.

JOSEPH HIRSCH, OF YONKERS, NEW YORK, ASSIGNOR T0 KOPS BROS. INC., A

CORPORATION OF NEW YORK.

ELASTIC WEBBING.

secured to the bodyof the garment or by the elastic strands pulling through the fabric itself. In either event, as will be appreciated, the fabric loses its elasticity and cannot then perform its intended functions in the garment. I am aware that heretofore, elastic webbing has been Woven, knitted or made otherwise in such a manner as to permanently bind the elastic strands in predetermined sections to overcome the" difficulty of severing the elastic strands in sewing the retain their relative positions in'the finished,

.vent the elastic strands from fabric to the body of a garment and to prepulling through the fabric. In accordance with my present invention, however, the elastic webbing is constructed in the usual manner either by weaving, knitting, or otherwise, and the elastic strands employed are covered in a peculiar manner in order to permit the same to article. In carrying out the invention each elastic strand is preferably provided with a knotted thread forming a cover or a part of the cover therefor and in addition to the knotted thread the cover may include additional ordinary threads. The elastic strands thus prepared are woven or knitted or otherwise worked into the elastic webbing and the action of the knotted thread forming projections or bumps on the surface ofthe elastic strands with the elastic strand itselfand the body'iofithe fabric into which it is worked causes the elastic strand to retain its position in the finished article, as will be hereinafter more particularly described. k

- In the drawing Figurelisja diagrammatic plan showing'an elastic webbing made in accordance with my present invention.

Fig. 2 is an elevation showing an elastic strand provided with a knotted thread wound thereon.

Fig. 3 is a view similar to Fig. 2 showing the elastic strand with both a. knotted and a plain thread wound thereon. In Flgs. 2

and 3 the elastic strand is illustrated as under tension for the application of the winding of the threads thereon.

Fig. 4 is an elevation of an elastic strand after the tension is released showing the cover formed of a knotted and a plain thread, and

Fig. 5 is a section on line 5-5, Fig. 4.

Referring to the drawing it will be seen that in carrying out the invention the elastic webbing made in accordance therewith may be woven in the usual manner to include inelastic warp threads 10, inelastic weft threads 11 and spaced elastic warp threads 12. The fabric, however, may be knitted or constructed in any other manner and the elastic strands may be utilized as wefts instead of warm without departing fromthe nature of the invention.

lncarryin out the invention the elastic strands employed are specially prepared. Each elastic strand is wound while under tension with a knotted thread or a thread similarly prepared. As indicated in Fig. 2,

a knotted thread is indicated at 13 and provided at regular or irregular intervals with knots 14. This thread is wound so as to form a cover for the core of theelastic strand. The knotted thread is preferably wound spirally, although as will be understood this is not absolutely necessary. As

shown .in Fig. 3 in addition to the knotted thread the elastic strand while under tension may be wound with a plain or ordinary thread 15 which is preferably wound spirally and in the direction opposite to that in which the knotted thread 1s wound. However, the particular manner in which the additional thread is wound does not enter into or form part of this invention. It will be equally obvious that. while I have illustrated a cover formed of a single knotted,

core of the strand, while under tension, so

as to conform with its surface and that when the tension is released the knotted portions of the thread tend to provide indentations in the core as indicated at 16 in Fig. 5 of the drawing. It will furthermore be understood that in weaving or knitting or otherwise working the elastic strands as hereinbeiore described into the elastic webbing, the inelastic warp and weft threads or the inelastic threads employed otherwise than in weaving, conform to the surface of the elastic strand whereby the irregularities in the surface of each strand due to their association with the rubber core and the inelastic strands of the fabric prevent the elastic strand from pulling through the finished article.

It is also to be understood that by the term knotted thread or a thread having knotted portions therein applicant means any thread in which at stated intervals there are enlarged portions of the thread.

I claim as my invention:

1. An elastic strand comprising a core,

and a cover thread having knots therein at relatively close intervals.

2. An elastic strand comprising a rubber core, and an inelastic thread having knots therein at relatively close intervals.

3. An elastic strand comprising a rubber core, a thread wound spirally thereon and having knots therein at relatively close intervals, and a plain inelastic cover thread surrounding the core and the spaced knotted thread.

4:. In an elastic webbing, inelastic warp and weft threads, and a-plurality of elastic threads each comprising a core and a cover thread having knots therein at relatively close intervals.

5. In an elastic webbing, inelastic warp and weft threads, and a plurality of elastic warp threads each comprising a rubber core and a cover thread in which there are knots at relatively close intervals.

Signed by me this 14th day of January,

JOSEPH HIRSCH. 

